The new report calls for a focus on improving waste management systems in a handful of developing countries that are most responsible for the plastic leakage into the ocean. China, Indonesia, the Philippines, Thailand and Vietnam contribute more than half of the oceans’ plastic since their waste infrastructure hasn’t kept up with rapid industrialization. “We can concentrate on the places where the plastic is hitting the ocean,” Merkl says. “Five countries would solve half the problem.”
On average, only about 40% of waste in these countries is actually picked up for disposal. But it’s not just uncollected waste floating around–though that is three-fourths of the problem. The other quarter of the oceans’ plastic came from post-collection activities. Even when a waste management company picks up waste to landfill it, poorly insulated landfills or illegal dumping mean that trash still ends up in the ocean.
But how can countries stem the leakage of waste into the ocean when it’s coming from so many sources? The Ocean Conservancy report suggests five “levers”: waste collection services, closing the leakage points within the collection system, gasification and incineration of waste, and recycling facilities. The average waste collection rate in the countries of interest is barely above 40%–meaning the majority of waste ends up as litter. Just by expanding collection systems and plugging up their leakage points, the report says plastics leakage could by cut by 50% by 2020.
It’s not just an environmentalist’s pipe dream. Coca-Cola and Dow Chemical, along with some other multinational companies that will be announced soon, have joined forces with the Ocean Conservancy to fight ocean pollution. Says Dow Packaging and Speciality Plastics’ global sustainability director in a press release: “We’re committed to working toward a future of a plastic-free ocean. Companies don’t make plastic with the intent of it ending up in the ocean, and we acknowledge the strong role industry must play in order to help eliminate ocean plastic waste by 2035.”
Merkl emphasized that the countries can’t recycle their way out of the problem. Only about 20% of the waste is valuable enough to be worth recycling: the rest, unglamorously, needs to be sent to sanitary landfills or waste-to-energy plants. “You have to concentrate on the fundamentals of waste management,” he says. And while building landfills and incinerators across these developing countries might not be pretty, it’s far more environmentally friendly than letting waste slide into the world’s oceans.
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